Provided is a shift register circuit which includes: first through N-th circuit sections in each of which a plurality of shift register stages are connected in cascade; and supply wires. Consequential watch services in accordance with the principles of the present invention provide location information to one or more services OTHER than or in ADDITION to the service currently requesting location information, based on subscription to a suitable service. In another approach, a compensated clock close to the next edge of the ideal clock may be generated after the current edge of the ideal clock is missed. This is then converted into a time domain equalised data stream for recovery of originally transmitted information. Various other methods, systems, and computer-readable media are also disclosed. The bolus of MR contrast agent is injected into the patient, and MR signals are generated in, and MR signals are obtained from, the patient in a time window after the bolus has washed out of the right coronary chambers and still enhances MR signals in the right coronary artery.