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Pretet V, Giraudet AL, Vergnaud L, Paquet E, Kryza D. Radionuclide Therapy With 177 Lu-PSMA in a Patient With Hepatocellular Carcinoma. Clin Nucl Med 2024; 49:584-586. [PMID: 38630998 DOI: 10.1097/rlu.0000000000005212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
ABSTRACT A 69-year-old man diagnosed with progressive bone metastatic castration-resistant prostate adenocarcinoma and concurrent alcoholic cirrhosis with multiple hepatocellular carcinoma (HCC) nodules was referred to our nuclear medicine service for 177 Lu-PSMA-617 therapy. The patient's pretreatment screening using 68 Ga-PSMA-11 PET/CT revealed high prostate-specific membrane antigen expression in both prostatic and HCC lesions. The patient underwent 2 doses of 177 Lu-PSMA-617. Subsequent imaging assessments with 68 Ga-PSMA-11 PET/CT and hepatic MRI indicated progressive HCC nodules, while showing a partial response in prostatic bone metastases. Positive clinical and biological responses were observed only in prostatic disease, but not in HCC nodules.
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Affiliation(s)
| | | | - Laure Vergnaud
- CREATIS, CNRS UMR 5220, INSERM U 1044, Université de Lyon, INSA-Lyon, Université Lyon 1, France
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Boccalini S, Teulade M, Paquet E, Si-Mohamed S, Rapallo F, Moreau-Triby C, Charrière S, Mewton N, Boussel L, Bergerot C, Douek P, Moulin P. Silent myocardial infarction fatty scars detected by coronary calcium score CT scan in diabetic patients without history of coronary heart disease. Eur Radiol 2024; 34:214-225. [PMID: 37530810 DOI: 10.1007/s00330-023-09940-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 05/14/2023] [Accepted: 05/16/2023] [Indexed: 08/03/2023]
Abstract
OBJECTIVES To evaluate the prevalence of intra-myocardial fatty scars (IMFS) most likely indicating previous silent myocardial infarction (SMI), as detected on coronary artery calcium (CAC) computed tomography (CT) scans in diabetic patients without history of coronary heart disease (CHD). METHODS Diabetic patients screened for silent coronary insufficiency in a tertiary-care, university hospital between Jan-2015 and Dec-2016 were categorized according to their CAC score in two groups comprising 242 patients with CACS = 0 and 145 patients with CACS ≥ 300. CAC-CT scans were retrospectively evaluated for subendorcardial and transmural IMFS of the left ventricle. Adipose remodeling, patients' characteristics, cardiovascular risk factors and metabolic profile were compared between groups. RESULTS Eighty-three (21%) patients with IMFS were identified, 55 (37.9%) in the group CACS ≥ 300 and 28 (11.6%) in the CACS = 0 (OR = 4.67; 95% CI = 2.78-7.84; p < 0.001). Total and average surface of IMFS and their number per patient were similar in both groups (p = 0.55; p = 0.29; p = 0.61, respectively). In the group CACS ≥ 300, patients with IMFS were older (p = 0.03) and had longer-lasting diabetes (p = 0.04). Patients with IMFS were older and had longer history of diabetes, reduced glomerular filtration rate, more coronary calcifications (all p < 0.05), and higher prevalence of carotid plaques (OR = 3.03; 95% CI = 1.43-6.39, p = 0.004). After correction for other variables, only a CACS ≥ 300 (OR = 5.12; 95% CI = 2.66-9.85; p < 0.001) was associated with an increased risk of having IMFS. CONCLUSIONS In diabetic patients without known CHD, IMFSs were found in patients without coronary calcifications, although not as frequently as in patients with heavily calcified coronary arteries. It remains to be established if this marker translates in an upwards cardiovascular risk restratification especially in diabetic patients with CACS = 0. CLINICAL RELEVANCE STATEMENT In diabetic patients without history of coronary heart disease, intramyocardial fatty scars, presumably of post-infarction origin, can be detected on coronary artery calcium CT scans more frequently, but not exclusively, if the coronary arteries are heavily calcified as compared to those without calcifications. KEY POINTS • Intramyocardial fatty scars (IMFS), presumably of post-infarction origin, can be detected on coronary artery calcium (CAC) CT scans more frequently, but not exclusively, in diabetic patients with CACS ≥ 300 as compared to patients CACS = 0. • Patients with IMFS were older and had longer history of diabetes, reduced glomerular filtration rate, and more coronary calcifications. • Carotid plaques and CACS ≥ 300 were associated with an increased risk of having IMFS, about three and five folds respectively.
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Affiliation(s)
- Sara Boccalini
- Department of Cardiovascular Radiology, Hôpital Pradel, Hospices Civils de Lyon, Lyon, France.
- University Claude Bernard Lyon 1, Lyon, France.
| | - Marie Teulade
- University Claude Bernard Lyon 1, Lyon, France
- Department of Endocrinology Louis Pradel University Hospital, Hospices Civils de Lyon, INSERM UMR 1060, Carmen, Lyon, France
| | - Emilie Paquet
- Department of Nuclear Medicine, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | - Salim Si-Mohamed
- Department of Cardiovascular Radiology, Hôpital Pradel, Hospices Civils de Lyon, Lyon, France
- University Claude Bernard Lyon 1, Lyon, France
| | - Fabio Rapallo
- Department of Economics, University of Genova, Genoa, Italy
| | - Caroline Moreau-Triby
- Department of Nuclear Medicine, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | - Sybil Charrière
- University Claude Bernard Lyon 1, Lyon, France
- Department of Endocrinology Louis Pradel University Hospital, Hospices Civils de Lyon, INSERM UMR 1060, Carmen, Lyon, France
| | - Nathan Mewton
- University Claude Bernard Lyon 1, Lyon, France
- Department of Cardiology, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | - Loic Boussel
- Department of Radiology, Hôpital de la Croix Rousse, Hospices Civils de Lyon, Lyon, France
| | - Cyrille Bergerot
- Department of Cardiology, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | - Philippe Douek
- Department of Cardiovascular Radiology, Hôpital Pradel, Hospices Civils de Lyon, Lyon, France
- University Claude Bernard Lyon 1, Lyon, France
| | - Philippe Moulin
- University Claude Bernard Lyon 1, Lyon, France
- Department of Endocrinology Louis Pradel University Hospital, Hospices Civils de Lyon, INSERM UMR 1060, Carmen, Lyon, France
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Giraudet AL, Vinceneux A, Pretet V, Paquet E, Lajusticia AS, Khayi F, Badel JN, Boyle H, Flechon A, Kryza D. Rationale for Prostate-Specific-Membrane-Antigen-Targeted Radionuclide Theranostic Applied to Metastatic Clear Cell Renal Carcinoma. Pharmaceuticals (Basel) 2023; 16:995. [PMID: 37513907 PMCID: PMC10383345 DOI: 10.3390/ph16070995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
Prostate-specific membrane antigen (PSMA), whose high expression has been demonstrated in metastatic aggressive prostate adenocarcinoma, is also highly expressed in the neovessels of various solid tumors, including clear cell renal cell carcinoma (ccRCC). In the VISION phase III clinical trial, PSMA-targeted radioligand therapy (PRLT) with lutetium 177 demonstrated a 4-month overall survival OS benefit compared to the best standard of care in heavily pretreated metastatic prostate cancer. Despite the improvement in the management of metastatic clear cell renal cell carcinoma (mccRCC) with antiangiogenic tyrosine kinase inhibitor (TKI) and immunotherapy, there is still a need for new treatments for patients who progress despite these drugs. In this study, we discuss the rationale of PRLT applied to the treavtment of mccRCC.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - David Kryza
- Lumen Nuclear Medicine Department, Hospices Civils de Lyon, 69437 Lyon, France
- UNIV Lyon-Université Claude Bernard Lyon 1, LAGEPP UMR 5007 CNRS Villeurbanne, 69100 Villeurbanne, France
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Moreau A, Pretet V, Paquet E, Giraudet AL, Kryza D. Intense Diffuse Lung Uptake Due to Interstitial Pneumopathy Related to Polyangiitis Granulomata in 68 Ga-PSMA-11 PET/CT. Clin Nucl Med 2023; 48:261-263. [PMID: 36094496 DOI: 10.1097/rlu.0000000000004408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
ABSTRACT We reported the case of a 73-year-old man for whom a prostatic adenocarcinoma with synchronous bone metastases was diagnosed. Because his disease was progressing despite several lines of chemotherapy and hormonotherapy, he was screened with a 68 Ga-PSMA PET/CT for a possible 177 Lu-PSMA-617 therapy. The examination demonstrated an intense diffuse bone uptake related to the known bone involvement. It also showed an unexpected diffuse and intense lung uptake, secondary to an active polyangiitis granulomata. This intense lung uptake prohibits the radioligand therapy.
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5
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Dor B, Paquet E, Orban T, Dubois AF, Schmets A, Pitchot W. [Alcohol dependence in primary care : a clinical approach by the GP]. Rev Med Liege 2019; 74:287-293. [PMID: 31206268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Clinical care to patients with alcohol dependence by GP's is described in this article. First, we have to destigmatize these patients and their illness. Diagnosis approach is specified. Therapeutic approach is first a motivational approach; subsequently it's like pedagogy : it's coping. Care is both physical and psychological. Empathy all along therapeutic relationship is a priority and how establishing a therapeutic alliance is described. A psychiatrist, a psychologist, a care network, self-help associations have also to be called on when needed. Physicians education creates new opportunities since 2016-2017 : in particular SSMG (Scientific Society of Primary Care) and three Belgian universities (UCL, ULB and ULiège) introduced a special study program called «?certificat interuniversitaire d'alcoologie?». Let's hope this new clinical rewarding approach for GP's contribute to reduce the treatment gap as far as clinical care of patients with alcohol dependence is concerned.
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Affiliation(s)
- B Dor
- Cabinet de Médecine générale et Alcoologie, Liège, Belgique
| | - E Paquet
- Alcoologie, C.H.S. L'Accueil, Lierneux, Belgique
| | - T Orban
- Cabinet de Médecine générale et Alcoologie, Uccle, Belgique
| | | | | | - W Pitchot
- Service de Psychiatrie et de Psychologie Médicale, CHU Liège, Belgique
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6
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Pefani E, Panoskaltsis N, Mantalaris A, Georgiadis MC, Pistikopoulos EN, Aguilar-Mahecha A, Lafleur J, Seguin C, Rosenbloom M, Przybytkowski E, Pelmus M, Diaz Z, Batist G, Basik M, Tavernier J, Brunet L, Bazot J, Chemelle M, Dalban C, Guiu S, di Martino C, Lehtio J, Branca M, Johansson H, Orre M, Granholm V, Forshed J, Perez-Bercoff M, Kall L, Nielsen KV, Andresen L, Muller S, Matthiesen S, Schonau A, Oktriani R, Wahyono A, Haryono S, Utomo A, Aryandono T, Diaz Z, Gagnon-Kugler T, Rousseau C, Aguilar-Mahecha A, Alcindor T, Aloyz R, Assouline S, Basik M, Bachvarov D, Belanger L, Camlioglu E, Cartillone M, Chabot B, Christodoulopoulos R, Courtemanche C, Constantin A, Benlimame N, Dao I, Dalfen R, Gosselin L, Habbab F, Hains M, Haliotis T, Nielsen TH, Joncas M, Kavan P, Klink R, Langlaben A, Lebel M, Lesperance B, Mann K, Masson J, Metrakos P, McNamara S, Miller WH, Orain M, Panasci L, Paquet E, Phillie M, Qureshi S, Rodrigue D, Salman A, Spatz A, Tetu B, Tosikyan A, Tsatoumas M, Vuong T, Batist G, Ruijtenbeek R, Houtman R, de Wijn R, Boender P, Hilhorst R, Cohen Y, Onn A, Lax A, Yosepovich A, Litz S, Kalish S, Felemovicius R, Hout-Silony G, Gutman M, Shabtai M, Rosin D, Valeanu A, Winkler E, Sklair-Levy M, Kaufman B, Barshack I, Canu V, Sacconi A, Biagioni F, Mori F, di Benedetto A, Lorenzon L, di Agostino S, Cambria A, Germoni S, Grasso G, Blandino R, Panebianco V, Ziparo V, Federici O, Muti P, Strano S, Carboni F, Mottolese M, Diodoro MG, Pescarmona E, Garofalo A, Blandino G, Ho T, Feng L, Lintula S, Orpana KA, Stenman J, El Messaoudi S, Mouliere F, del Rio M, Guedj AS, Gongora C, Molina FM, Lamy PJ, Lopez-Crapez E, Rolet F, Mathonnet M, Ychou M, Pezet D, Thierry AR, Manuarii M, Tredan O, Bachelot T, Clapisson G, Courtier A, Parmentier G, Rabeony T, Grives A, Perez S, Mouret JF, Perol D, Chabaud S, Ray-Coquard I, Labidi-Galy I, Heudel P, Pierga JY, Caux C, Blay JY, Pasqual N, Menetrier-Caux C. Technology & tools development. Ann Oncol 2012. [DOI: 10.1093/annonc/mds163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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7
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Diaz Z, Gagnon-Kugler T, Rousseau C, Aguilar-Mahecha A, Alcindor T, Aloyz R, Assouline S, Basik M, Bachvarov D, Bélanger L, Camlioglu E, Cartillone M, Chabot B, Christodoulopoulos R, Courtemanche C, Constantin A, Benlimame N, Dao I, Dalfen R, Gosselin L, Habbab F, Hains M, Haliotis T, Nielsen T, Joncas M, Kavan P, Klink R, Langlaben A, Lebel M, Lespérance B, Mann K, Masson J, Metrakos P, McNamara S, Miller W, Orain M, Panasci L, Paquet E, Phillie M, Qureshi S, Rodrigue D, Salman A, Spatz A, Têtu B, Tosikyan A, Tsatoumas M, Vuong T, Batist G. P3.07 Building the Organization Framework for Biopsy-Driven Translational Research: The Quebec Clinical Research Organization in Cancer (Q-Croc) Experience. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)31360-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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8
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Abstract
Idiopathic dilatation of the pulmonary artery (IDPA) is a rare congenital disease which is usually detected fortuitously on chest x-ray, thus radiologists must be aware of this clinical entity. This report describes four cases to which Magnetic Resonance Imaging (MRI) played a major role in diagnosing IDPA and in detecting the concomitant findings observed in this disease. MRI is a non-invasive procedure with many advantages for the accurate and reproducible measurement of artery structures, which makes it the preferred option for combined use with echocardiography in the diagnosis and follow-up of patients with IDPA.
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Affiliation(s)
- P Ugolini
- INSERM U494, Hopital Broussais, Paris, France
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9
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Abstract
Angiosarcoma of the heart is a rare tumor. This tumor is most frequently located in the right atrium and pericardium. Localization of a tumor in the interatrial septum usually suggests atrial myxoma. We report two cases of angiosarcoma originating from the interatrial septum, one extending into the right atrium and the other into the left atrium, mimicking atrial myxomas. Transesophageal echocardiography allowed the diagnosis and comprehensive assessment of compromised structures.
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Affiliation(s)
- A G Rodrigues
- Echocardiography Laboratory, Montreal Heart Institute, Quebec, Canada
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10
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Carrier M, Hudon G, Paquet E, Leung TK, White M, Pelletier GB, Pelletier LC. Mediastinal and pericardial complications after heart transplantation. Not-so-unusual postoperative problems? Cardiovasc Surg 1994; 2:395-7. [PMID: 8049983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Of a total of 133 patients who underwent heart transplantation, 16(12%) had pericardial and mediastinal complications. Non-infectious pericardial complications, pericardial effusion and constriction were noted in ten patients, and infectious pericarditis or mediastinitis in six. Cardiac echocardiography, catheterization and magnetic resonance imaging were useful in assessing these problems. All patients underwent surgical treatment, pericardial drainage, pericardectomy or muscle flap closure. Twelve (75%) of these 16 patients are long-term survivors. In conclusion, pericardial and mediastinal complications are common after heart transplantation, and aggressive surgical treatment is most often effective in their control.
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Affiliation(s)
- M Carrier
- Department of Surgery, Montreal Heart Institute, Quebec, Canada
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11
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Maillette S, Paquet E, Carrier L, Leclerc Y, Leung TK, Takahashi A. Asymptomatic heterotopic thyroid tumour in the right ventricular infundibulum. Can J Cardiol 1994; 10:37-40. [PMID: 8111669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
An asymptomatic thyroid cardiac tumour was discovered in the right ventricular infundibulum of a 63-year-old female investigated for angina. The results of the investigation are presented: coronary angiography, echocardiography, magnetic resonance imaging, resting radioactive 201-thallium scintigraphy, dipyridamole-thallium scintigraphy, nuclear isotopic ventriculography. The tumour was successfully removed at surgery for coronary bypass. Anatomopathological description is also included.
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Affiliation(s)
- S Maillette
- Department of Medicine, Pierre Boucher Hospital, Longueuil, Quebec
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12
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Dagenais F, Cartier R, Paquet E, Hudon G, Castonguay Y, Leclerc Y. Pseudoaneurysm after Bentall repair: magnetic resonance imaging assessment. Can J Cardiol 1993; 9:869-72. [PMID: 8281475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The prevalence and natural history of pseudoaneurysms (PA) following Bentall procedure has not been established. To determine the follow-up of PA in patients, the authors report their experience with magnetic resonance imaging (MRI) since 1988. Spin-echo technique suspected PA in 19 of the 27 patients who underwent aortic valve and ascending aortic replacement between 1980 and 1991. Mean PA diameter was less than 4 cm in 13 patients (group 1) and at least 4 cm in six patients (group 2). Two patients in group 1 were lost at follow-up while two others in this group died after first spin-echo examination (one death was related to PA formation). Repeated MRIs were thus possible in nine patients in group 1 and in all patients in group 2, averaging 2.2 +/- 1.1 examinations per patient for group 1 and 1.8 +/- 1.1 for group 2. PA assessed in six group 1 patients and one group 2 patient suggested thrombosed PA or postoperative hematoma. PA remained stable in two group 1 patients and one group 2 patient. One patient from group 1, in whom PA increased at follow-up, died suddenly. Four patients in group 2 required correction of PA, which had increased in diameter. Recently, addition of cine MRI has allowed visualization of turbulent flow within PA, thus increasing MRI specificity for PA diagnosis. In conclusion, MRI constitutes a reliable noninvasive imaging technique for diagnosis and follow-up of PA after Bentall repair.
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Affiliation(s)
- F Dagenais
- Department of Surgery, Montreal Heart Institute, Quebec
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13
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Paquet E, Joyal M, Chassat C, Bourassa MG, Laurier J, Lespérance J, Lemarbre L. Assessment of left ventricular function using digital angiography. Can Assoc Radiol J 1988; 39:250-3. [PMID: 3203216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
We have demonstrated that selective digital left ventricular angiography using small amounts of contrast material minimized both symptoms and hemodynamic alterations and provided good images for assessment of regional ventricular function. However, comparisons of ejection fraction (EF), end-systolic volume (ESV), and end-diastolic volume (EDV) from digital angiography, at 10 frames per second, with measurements derived from conventional angiography, showed only a fair correlation between the two methods. Using a new generation of digital equipment and an acquisition time of 30 frames per second, we studied the correlation between digital and conventional angiography in 29 patients with coronary artery disease for a wide spectrum of left ventricular functions. Ventricular volumes and EF were calculated by computer using the area-length method. The correlation coefficient (r) between both the methods was 0.93 for EF, 0.95 for ESV and 0.89 for EDV. Thus digital left ventricular angiography provides an accurate evaluation of left ventricular function and can with advantage replace conventional angiography for this purpose.
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Affiliation(s)
- E Paquet
- Département de Radiologie, Institut de Cardiologie de Montréal, Québec
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14
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Lemarbre L, Hudon G, Bourassa MG, Paquet E. [Peripheral angiography without hospitalization: an everyday reality]. Union Med Can 1986; 115:113-5. [PMID: 3705254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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15
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Paquet E, Bourassa MG, Lespérance J, Laurier J, Dyrda I, Lemarbre L, Bonan R, Joyal M, Corcos T. Usefulness of digital subtraction left ventriculography in patients with ischemic heart disease: comparison with cineangiography. J Can Assoc Radiol 1984; 35:343-8. [PMID: 6396303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Digital subtraction and computer enhancement of left ventriculography allow the injection of small amounts of contrast medium into the left ventricle. Image quality measurements of cardiac volumes, and ejection fraction and evaluation of regional wall motion were compared following digital subtraction and cine ventriculography in 30 patients undergoing coronary arteriography for suspected or proven ischemic heart disease. At concentrations of 13% to 19% (iodine contents: 2.0 to 5.0 g) meglumine sodium diatrizoate used for digital subtraction ventriculography, no alterations of ventricular pressures were noted; premature ventricular contraction and cineventriculography in 30 patients undergoing coronary arteriography for suspected wall motion by two independent observers showed complete agreement between digital and cineventriculography in 141 of 150 segments (94%), including 114 normal segments; digital ventriculography led to underestimation of four segments and to overestimation of five. Left ventricular ejection fraction and volumes calculated using both techniques correlated relatively well (ejection fraction: r = 0.86; end systolic volume: r = 0.88; end diastolic volume: r = 0.665). Thus, intraventricular injection of low concentrations of contrast medium provides good digital angiographic images and may eventually replace cine ventriculography for invasive assessment of left ventricular performance. However, ECG gating and shorter exposure times will be required for accurate measurement of ventricular volumes and ejection fractions.
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Lemarbre L, Paquet E, Bourassa MG, Lespérance J, Dupras G, Laurier J. Comparison of digital and radionuclide left ventriculography in patients at risk from conventional left ventriculography. J Can Assoc Radiol 1984; 35:349-53. [PMID: 6396304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In this study, two alternative methods of assessing left ventricular (LV) sequential wall motion and ejection fraction (EF) were used in 28 consecutive patients in whom an unstable clinical condition (unstable angina pectoris or severe LV dysfunction) precluded the use of high volume contrast cineventriculography. A new approach, direct small volume contrast digital ventriculography, was compared to radionuclide blood pool ventriculography considered as a "standard" and reliable technique. The qualitative analysis of regional LV contraction by three independent observers showed a complete agreement in 64% of segments studied in the left anterior oblique (LAO) projection and in 69% in the right anterior oblique (RAO) projection; a one-degree disagreement was observed in 13% and 19% respectively, and a discrepancy of two degrees or more in 23% and 12% respectively. Left ventricular ejection fraction calculated from both techniques correlated relatively well (r = 0.82). The radionuclide examination still remains the fastest, easiest and most objective way to appraise global LV function in high risk patients. However, optimal analysis of segmental wall motion requires invasive digital contrast left ventriculography. In future, a more general use of non-ionic contrast media including their intravenous injection and the advent of portable digital devices should permit their widespread use as a safe, rapid and reliable procedure even in the intensive care unit.
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17
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Corcos T, David PR, Bonan R, Paquet E, Lespérance J, Bourassa MG. Clinical experience with ioxaglate (Hexabrix) in selective coronary arteriography. J Can Assoc Radiol 1984; 35:354-9. [PMID: 6526845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
This prospective nonrandomized study was performed to evaluate the safety and efficacy of, as well as patient tolerance for, a new low osmolality contrast medium, ioxaglate (Hexabrix), in 90 adult patients of both sexes who were referred to our cardiac catheterization laboratory for angiocardiography including selective coronary arteriography. Ioxaglate did not cause any major adverse effects; side effects were rare and mild. Hemodynamic changes were minimal, even in patients with severe coronary artery disease, and no arrhythmias were seen. The radiographic quality of angiograms was scored as good to excellent for each examination, and was equal to that of films performed using a conventional contrast medium. Ioxaglate may be the contrast medium of choice for angiocardiography, especially in patients at high risk, i.e., those with severe coronary artery disease or severe left ventricular dysfunction.
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David PR, Bourassa MG, Lespérance J, Scholl JM, Crépeau J, Dyrda I, Hudon G, Chaitman BR, Dupras G, Pelletier C, Maillé JG, Paquet E. [Coronary percutaneous transluminal angioplasty: initial results in our first 110 patients]. Union Med Can 1982; 111:23-30, 78. [PMID: 6460367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Paquet E, Blanchette J, Desaulniers D, Després JP, Lemieux M. Value of a cinefluoroscopic assessment of the Lillehei-Kaster prosthetic heart valves. Cardiovasc Radiol 1978; 1:229-32. [PMID: 743717 DOI: 10.1007/bf02552048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In order to assess the functioning of the pivoting disc of the Lillehei-Kaster prosthetic valve, a cinefluoroscopic technique using multiple angulations was developed. The disc was detected in 240 (99%) of the 242 valves studied (126 aortic, 107 mitral, and nine tricuspid valves). The maximal-opening angle of the disc was measured in 75% of the aortic but only 20% of the mitral valve prostheses in the 182 valve studies in which this was attempted. Prosthetic dysfunctions were suspected clinically in three aortic and three tricuspid valves and confirmed with the cinefluoroscopic technique. This cinefluoroscopic approach constitutes a rapid, noninvasive, and sensitive evaluation of the function of the Lillehei-Kaster prosthetic valve in the aortic position.
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Bernier R, Dagenais GR, Blanchette J, Paquet E, Rouleau J. [Evaluation of regional myocardial ischemia by potassium 43 scintigram]. Ann Cardiol Angeiol (Paris) 1975; 24:383-92. [PMID: 1163979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Augustin CE, Laurenceau JL, Paquet E, Dagenais GR. [Genetic implications in the cardio-osseus malformation (Holt-Oram syndrome)]. Union Med Can 1975; 104:539-43. [PMID: 1224399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Jalbert B, Dagenais G-R, Paquet E, Marquis Y, Alsac J, Moisan A. [Correlations between coronary angiographic data and clinical, hemodynamic and metabolic consequences in cardiostimulator induced tachycardia]. Ann Cardiol Angeiol (Paris) 1975; 24:7-15. [PMID: 1147553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Bernier R, Paquet E, Gosselin C. [Peripheral circulation studied with an isotope method before and after lumbar sympathectomy]. Union Med Can 1974; 103:898-902. [PMID: 4601021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Lemieux M, Desaulniers D, Després JP, Paquet E. [Lillehei-Kaster heart valve prosthesis: short-term evaluation in 25 patients]. Union Med Can 1974; 103:849-53. [PMID: 4839536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Alsac J, Guay JM, Paquet E. [The syndrome of supravalvular aortic stenosis, mental retardation and peculiar facies]. Arch Mal Coeur Vaiss 1973; 66:765-73. [PMID: 4199790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Bernier R, Paquet E, Moisan A, Bergeron D. [Evaluation of the mean pressure of the left atrium by an isotopic technic]. Union Med Can 1972; 101:53-7. [PMID: 5013454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Paquet E, Chen C, Lutman G. Benign, cystic posterior mediastinal teratoma. J Can Assoc Radiol 1970; 21:19-20. [PMID: 5459927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Templeton AW, Reichertz PL, Paquet E, Lehr JL, Lodwick GS, Scott FI. RADIATE--updated and redesigned for multiple cathode-ray tube terminals. Radiology 1969; 92:30-6. [PMID: 4883041 DOI: 10.1148/92.1.30] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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