If no goals are associated with a plaything, it is a toy. (Crawford notes that by his definition, (a) a toy can become a game element if the player makes up rules, and (b) The Sims and SimCity are toys, not games.) If it has goals, a plaything is a challenge.
Topic Overview. The post-void residual (PVR) urine test measures the amount of urine left in the bladder after urination. The test is used to help evaluate: Incontinence (accidental release of urine) in women and men. Urination problems. An enlarged prostate (benign prostatic hyperplasia, or BPH).
Best Answer: Magnetic resonance venography (MRV) is a noninvasive test that probably is more sensitive and more specific than ultrasound in the detection of deep venous thrombophlebitis. Unfortunately, MRV is not readily available at many institutions, and many radiologists are inexperienced in the reading of MRV studies.