In the past years, further, more or less quantitative MRI techniques have been investigated. While pharmacokinetic modelling of high temporal resolution dynamic contrast-enhanced imaging (perfusion imaging) promises further, quantitative insights into the pathological characteristics of neoplastic vasculature, diffusionweighted imaging (DWI) and MR-spectroscopy (MRS) are based on entirely different concepts. While MRS is a molecular imaging technique able to quantify biochemical tissue properties, DWI is influenced by microstructural tissue changes. This talk aims to outline the concepts of perfusion, DWI and MRS, provide knowledge to implement these techniques into clinical practice and critically discusses the possible diagnostic benefit of doing so. Acute pelvic pain in pregnant women may be the manifestation of various gynaecological and non-gynaecological conditions. The correct diagnosis of the causes of acute pain during pregnancy is critical to minimise maternal-foetal morbidity and mortality. Although ultrasound (US) is the primary imaging investigation in the diagnostic evaluation of the pregnant patient, the role of magnetic resonance (MR) imaging in the evaluation of foetal and maternal diseases in pregnant patients continues to expand. MR imaging offers different potential advantages in comparison with US for evaluating acute abdominal and pelvic pain; these include multiplanar imaging capabilities, a higher soft tissue contrast and the ability to detect and distinguish blood from other fluid collections. When US is equivocal or nondiagnostic, MR imaging is a valuable complement to determine the exact aetiology of acute abdominal pain. The intrinsic safety and the accuracy of MRI in diagnosing abdominal and pelvic diseases make it an excellent choice for triage of pregnant patients with acute pelvic pain. MRI provides important information that influences the appropriate management and it is important for the radiologists to recognise the MR findings of the common causes of acute abdominal and pelvic pain. This lecture will discuss the use of MR imaging for maternal diseases that cause acute pelvic pain during pregnancy. Moreover, this lecture will discuss the different MR imaging techniques to use, and will show how to detect and to differentiate the gynaecological and non-gynaecological causes of acute pelvic pain during pregnancy. Learning Objectives: 1. To become familiar with the most common causes of pelvic pain in pregnancy. 2. To understand how to diagnose non-gynaecological causes of pain in pregnancy.