A "UTI" is the medical abbreviation for a urinary tract infection. UTIs can be accompanied by kidney stones, but no stones were observed during the pelvic CT-scan you experienced. The mineral shadows that observed were probably not due to stones, but are caused by carbonate deposits in the walls of the pelvic veins, or phlebolits.
LVH is the medical abbreviation for a left ventricle hypertrophy. During LVH, the wall of the left ventricle thickens. Left ventricle hypertrophy can be due to an increased load on the heart, specifically to the left ventricle.
Heart hypertrophy can be physiological only in people who play sports regularly. Sporty people can develop left ventricle hypertrophies to compensate for the increased physical effort required during exercise.
In most people, LVH is a pathological condition that is usually due to high blood pressure (HTA) or some type of heart valvular disorder such as regurgitation or stenosis. Left ventricle hypertrophy can also be idiopathic in nature, or have an unknown reason. At the beginning of the condition, LVH compensates for the increased heart load but if a primary disorder (HTA or valvular disorder, for example) continue to exist, hypertrophy won’t be able to compensate forever. In time, hypertrophy can develop into ventricular dilatation and heart failure. In your case, the LVH you are experiencing is probably due to mitral regurgitation. The physical efforts you’ve mentioned can’t cause LVH.