![]() The Formula method cannot be recommended as an alternative for volumetric measurements of the prostate gland due to its underestimation of volumes compared to SAT results.ĭiseases of the prostate gland are common, especially in older intact male dogs, and in most cases enlargement of the organ is seen. The Wrap function is highly accurate, less time-consuming and complex compared to SAT and could serve as beneficial tool for measuring prostatic volume in clinical routine after further validation in future studies. Differences between Formula and SAT volumes ranged from 22.4–31.1%, while differences between Wrap and SAT volumes were highest in small prostates (vg 1: 22.1%) and fell with increasing prostatic size (vg 3: 1.3%). Mean Formula volumes (vg 1: 2.2 cm 3, vg 2: 14.5 cm 3, vg 3: 109.4 cm 3, respectively) were significantly underestimated, while mean Wrap volumes (vg 1: 3.8 cm 3, vg 2: 19.5 cm 3, vg 3: 159.2 cm 3) were statistically equivalent to SAT measurements (vg 1: 3.1 cm 3, vg 2: 18.6 cm 3, vg 3: 157.2 cm 3, respectively). High correlation between the Formula or Wrap volume and the phantom volume was found, the values being higher for the Formula. Patients were grouped according to prostatic structure (H = homogeneous, I = inhomogeneous, C = cystic) and volume using the SAT (volume group = vg: 1, 2 and 3). Accuracy was checked against phantom measurements and results were compared to SAT measurements of the same patient pool obtained from a previously published paper. In this study, the prostatic volume of 95 canine patients (58 intact males, 37 neutered males) were analysed retrospectively by using the ellipsoid formula (Formula) and an imaging “wrap” function tool (Wrap) to help assess accuracy and applicability. Thus, demand exists for more practical volume assessment methods. ![]() Irrespective of high accuracy, SAT represents a complex and time-consuming procedure, which limits its clinical use. In a previous study, volume was analysed with a slice addition technique (SAT), which was validated as highly accurate. While enlargement is a non-uniform process, volumetric measurements are believed to be advantageous to any single dimensional parameter for the diagnosis of prostatomegaly. Since most prostatic diseases are associated with the organ’s enlargement, evaluation of prostatic size is a main criterion in the diagnosis of prostatic state of health.
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