The association between the outcomes of extraperitoneal laparoscopic radical prostatectomy and the anthropometric measurements of the prostate by magnetic resonance imaging

Abstract

Introduction and objectiveTo determine the association between the anthropometric measurements by magnetic resonance imaging (MRI) and perioperative outcomes of extraperitoneal laparoscopic radical prostatectomy (ELRP).Materials and MethodsFrom 2008 to June 2016, 86 patients underwent preoperative MRI prior to undergoing ELRP for localized prostate cancer. We analyzed the associations between anthropometric measurements of MRI and the perioperative outcomes of patients who underwent ELRP.ResultsThe mean patient age was 69.61±8.30 years. The medians of operating time and blood loss were 2.30 hours and 725.30ml, respectively. The total post-surgical complication rate was 1.16%. The median hospital stay was 6.50 days. The pathological stages for T2 and T3 were 45.74% and 34.04%, respectively. The rate as positive surgical margins (PSMs) was 18.09% (pT2 and pT3; 6.38% and 9.57%). The angles between pubic bone and prostate gland (angle 1&2), were significantly associated with operative time and hospital stay, respectively (p<0.05). There was no correlation between the pelvimetry and positive surgical margin.ConclusionsThe findings of the present study suggest that anthropometric measurements of the MRI are related to operative difficulties in ELRP. This study confirmed that MRI planning is the key to preventing complications in ELRP.

Value of three-dimensional visualization of preoperative prostatic magnetic resonance imaging based on measurements of anatomical structures in predicting positive surgical margin after radical prostatectomy

“…The seminal study by Permpongkosol S et al. measured the pubic angle, work space AP, work space transverse and bladder protrusion ( 35 ). These imaging parameters were analyzed, and some statistically significant anthropometric measurements were found to be associated with PSM.…”

“…Pubic angle 2 was the angle between the most inferior curve of the pubic bone and the pubic axis. The distance from the anterior peritoneum to the anterior border of the coccyx (inner border) was defined as the work space AP ( 35 ). The pelvic brim distance was defined as the distance from the median point of the upper margin of the pubic symphysis to the median point of the upper margin of the sacral promontory on the midsagittal image ( 33 ).…”

“…axis of the symphysis pubis and the horizontal line on the midsagittal image. BFW/AD was defined as the BWI (34). Curve distance was the vertical distance from the most bulging point of the posterior cortex of the pubic bone to the pubic axis.…”

Design, evaluation and comparison of endorectal coils for hybrid MR-PET imaging of the prostate

“…The coil assembly, including the phantom, was tilted with respect to the B 0 direction (in z-axis) by 0, 10, 20 and 30º to replicate the possible circumstances under which the inserted endorectal coil could be located in the subject (Roach et al 2001, Permpongkosol et al 2018, and the imaging performance of the coils was evaluated. Profiles in the sagittal direction on the axial images across the phantom, as imaged using all coils, , that is to say, the signal mean value in the selected ROI covering the entire table tennis ball phantom of those axial images (e.g.…”