How is clinical aspect and dx of PE and DVT?

PE great masquerader, most common symptom is unexplained breathlessness, DVT common symptom is cramp/charley horse, Pulmonary infarct most painful since peripheral near to pleural nerves. We have score of likelihood of PE and DVT accordingly we either r/o or undergo imaging. Blood tests include (D-dimer [rules out DVT if normal], ECG [sinus tachycardia, S1Q3T3 lead III, T inversion V1-V4]) Imaging include (venous US [loss of vein compressibility due to passive distention] CXR [normal in PE, see Westmark's sign, Hampton's Hump, Palla's sign] CT [IV contrast, pelvic and proximal leg DVT] lung scan [pt not tolerating contrast] MRI [US equivocal , venography with gadolinium] TTE [normal echo, to R/O others], Pulmonary angiography [invasive])