![]() In the setting of Nuclear Medicine, it was originally called MAP (Maximum Activity Projection). MIP imaging was invented for use in Nuclear Medicine by Jerold Wallis, MD, in 1988 at Washington University in St Louis, and subsequently published in IEEE Transactions on Medical Imaging. Because - in general - we can terminate the ray earlier this technique is faster and also gives somehow better results as it approximates occlusion. In this technique we don't take the global maximum value, but the first maximum value that is above a certain threshold. Use of depth weighting during production of rotating cines of MIP images can avoid the problem of difficulty of distinguishing right from left, and clockwise vs anti-clockwise rotation.Īn easy improvement to MIP is Local maximum intensity projection. However, since the projection is orthographic the viewer cannot distinguish between left or right, front or back and even if the object is rotating clockwise or anti-clockwise. This helps the viewer's perception to find the relative 3D positions of the object components. To improve the sense of 3D, animations are usually rendered of several MIP frames in which the viewpoint is slightly changed from one to the other, thus creating the illusion of rotation. Furthermore, if the branching crosses a page boundary, yet another cycle must be added to the execution time listed.īEQ does not affect neither the zero flag nor any other CPU status flag.This technique is computationally fast, but the 2D results do not provide a good sense of depth of the original data. If it does take the branch, execution takes one additional clock cycle. The listed time is valid only in cases where BEQ does not take the branch. The execution time for BEQ is not a fixed value, but depends on the circumstances. The relative address is treated as a signed byte that is, it shifts program execution to a location within a number of bytes ranging from -128 to 127, relative to the address of the instruction following the branch instruction. In the assembler formats listed, nn is a one-byte (8-bit) relative address. 'What is the maximum offset from s' I beleive the answer is the same 216. Sometimes 216 is not enough to reach location jump and than you may use unconditional jump. For offset is reserved 16bits so the maximum branch distance is 21665535. ![]() Execution continues here if "NumA " "NumB " Addressing mode OpcodeīEQ only supports the Relative addressing mode, as shown in the table at right. If we look beq or bne instruction, OP, RS, RT, OFFSET 32bits. LDA NumA Read the value "NumA " CMP NumB Compare against "NumB "īEQ Equal Go to label "Equal" if "NumA " = "NumB " The zero flag is also affected as a result of comparisons (see CMP, CPX, and CPY), and so BEQ, and its counterpart BNE, is often used after a comparison to redirect program execution depending on whether the compared values are equal or not, e.g.: In this example, BEQ will take the jump if the byte retrieved from Number equals zero:īEQ Equal Go to label "Equal" if "Number " = 0 Since the zero flag is set if the result of an operation, or a byte retrieved from memory, equals zero, one of the uses for BEQ is to check for such zero results. If the zero flag is clear when the CPU encounters a BEQ instruction, the CPU will continue at the instruction following the BEQ rather than taking the jump. BEQ (short for " Branch if EQual") is the mnemonic for a machine language instruction which branches, or "jumps", to the address specified if, and only if the zero flag is set. ![]()
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