Patient and healthcare professional satisfaction with 3D imaging new technologies for medical purposes

Bracing of Pectus Carinatum in Children: Current Practices

BACKGROUND

Although effective, compressive orthotic bracing (COB) in children with pectus carinatum is still not standardized. This study has aimed to analyze current practices amongst members of the Chest Wall International Group (CWIG).

METHODS

A web-based questionnaire was mailed to all CWIG members at 208 departments. It included 30 questions regarding diagnostic work-up, age for COB indication, type of COB used, daily wearing time, treatment duration, complications, and recurrence rate.

RESULTS

Members from 44 departments have responded (institutional response rate 21.2%). A total of 93% consider COB as the first-line treatment for PC. A conventional COB (CC) is used in 59%, and the dynamic compression system (FMF) in 41%. The overall compliance rate is >80%. A total of 67% of responders consider COB to be indicated in patients <10 years. The actual wearing time is significantly shorter than the physician-recommended time (p < 0.01). FMF patients experience a significantly faster response than CC patients (p < 0.01). No recurrence of PC has been noted in 34%; recurrence rates of 10-30% have been noted in 61%.

CONCLUSIONS

COB is the first-line treatment for PC with a high compliance rate. During puberty, the recurrence rate is high. Treatment standardization and follow-up until the end of puberty are recommended to enhance COB effectiveness.

The True-Blue technique: Enhanced chondral assessment of the chest wall

There is a growing understanding and identification of costal cartilage injuries, however, diagnosis of these injuries remains difficult. We present a novel radiodensity based coloring technique, termed the True-Blue technique, to manipulate 3D CT imaging and more accurately diagnose costochondral injuries.

Perceived characteristics of outpatient appointment scheduling association with patient satisfaction and treatment adherence: An innovation theory application

BACKGROUND

Despite the growing interest in Appointment scheduling (APS) in hospitals of developing countries, empirical assessment of their effectiveness in improving patients' experiences and adherence to treatment remains limited. We drew on the attributes of an innovation theory to hypothesize and test the extent to which perceived attributes of APS: relative advantage, compatibility, and complexity influences patient satisfaction and treatment adherence in a neurology clinic of a large Teaching Hospital in Ghana.

METHODS

A structured questionnaire was used to collect cross-sectional data from a sample of 295 scheduled patients visiting the clinic for follow-up care. Partial Least Squares Structural Equation Modeling (PLS-SEM) was used to analyze the hypothesized direct relationships of the APS attributes with patient satisfaction and treatment adherence, and the moderating effect of cordial doctor-patient communication in the relationships.

RESULTS

While the compatibility of APS with patient preference was positively associated with patient satisfaction (p < 0.01) and adherence to treatment (p < 0.01), the reverse was observed for complexity of the APS system (p < 0.01). We also found statistically significant relationship of patient satisfaction with treatment adherence (p < 0.01) which was positively moderated by cordial doctor-patient communication.

CONCLUSION

Findings suggest that making the APS system more compatible with patient preference can greatly improve upon patient experience satisfaction and adherence to medical treatment for effective therapeutic outcomes.

PRACTICE IMPLICATION

In the light of its benefits to patient care and outcomes, APS should be given priority over walk-in services in specialty clinics of developing countries.

Analysis of chest wall elevation after the Nuss procedure using 3D body scanning technique in patients with pectus excavatum

PURPOSE

For the evaluation of the chest wall deformity, we adopted a non-invasive 3D body scanning system. The objective of this study is to evaluate surgical effect on the whole thorax using 3D scanning technique before and after Nuss procedure.

METHODS

We performed 3D body scanning using Structure Sensor (Occipital Inc, USA) in 11 symmetric patients (average age 13 ± 3.2) under general anesthesia before and after Nuss procedure. Using the scanned data, the improved chest wall was analyzed using 3D-Rugle (Medic Engineering, Japan) imaging software. Preoperative and postoperative 3D data were super-imposed and a thoracic elevating distance in the line of the axial and sagittal section through the deepest point was calculated. Pre- and postoperative external sternal angle (ESA) were calculated from the scanned data.

RESULTS

Mean thoracic elevation distance at the deepest point was 38.6 ± 6.1 mm and it was 28.4 ± 5.1 mm and 19.4 ± 4.9 mm at 4 cm and 8 cm cranial side, respectively. Average ESA improved from 3.9 ± 1.6 degrees to 15.0 ± 1.1 degrees after the operation.

CONCLUSION

Chest depression was effectively elevated 39 mm at the deepest point after Nuss procedure. An indirect elevation effect by pectus bars was found on the wide area of the anterior chest.

Validating 3D indexes in the non-surgical pectus excavatum patient

BACKGROUND/PURPOSE

In recent years there has been an increased interest in three-dimensional (3D) imaging for the assessment of chest wall deformities. Some studies have proven a correlation between 3D and traditional cross-sectional images but only for patients who already had an indication for a computed tomography (CT) scan prior to surgery; mainly due to their severity. Our aim is to determine the accuracy and reliability of the measures obtained by a portable 3D scanner in a cohort of pectus excavatum (PE) patients with different severity grades, as well as in controls.

METHODS

We conducted a study comparing radiological and optical indexes on magnetic resonance imaging (MRI) and 3D surface images. We used a hand-held 3D scanner to obtain the optical Haller Index (3DHI) and Correction Index (3DCI) and a limited MRI scan to obtain the traditional indexes. A statistical analysis was carried out to determine the correlation between optical and radiological measures, plus a subjective severity evaluation.

RESULTS

Twenty-eight patients and controls were enrolled in the study. In both the control and PE groups, there was a significant positive correlation between the indexes, especially for the CI. There were no differences in correlation regarding gender, age or severity. CI appears to better discriminate amongst the different severity groups and controls.

CONCLUSION

3D surface imaging is feasible and appropriate to use to assess PE, regardless of the severity or characteristics of the individual patient. Even with a small hand-held device, we can obtain accurate images and measures which are especially useful for the assessment of the nonsurgical pectus patient.