diff --git a/src/SimNDT/gui/previewInspectionsController.py b/src/SimNDT/gui/previewInspectionsController.py
new file mode 100644
index 0000000..8336609
--- /dev/null
+++ b/src/SimNDT/gui/previewInspectionsController.py
@@ -0,0 +1,116 @@
+__author__ = 'Miguel Molero'
+
+import time
+
+from PySide.QtGui import *
+from PySide.QtCore import *
+from SimNDT.graphics.mplWidget import MplCanvas
+
+import numpy as np
+
+
+class PreviewSingleLaunch(QDialog):
+    def __init__(self, method, scenario, transducer, parent=None):
+        super(PreviewSingleLaunch, self).__init__(parent)
+        self.parent = parent
+
+        mpl = MplCanvas(self, width=3, height=3, dpi=100)
+
+        M, N = np.shape(scenario.I)
+        Pixel_mm = scenario.Pixel_mm
+
+        XL, YL = method.view(M, N, Pixel_mm, method.Theta, transducer)
+
+        mpl.ax.imshow(scenario.I, vmin=0, vmax=255)
+        mpl.ax.hold(True)
+        mpl.ax.plot(YL, XL, 'ks')
+        mpl.ax.axis('off')
+
+        w = QWidget(self)
+        h = QVBoxLayout()
+        h.addWidget(mpl)
+        w.setLayout(h)
+
+        layout = QVBoxLayout()
+        layout.addWidget(w)
+
+        self.setLayout(layout)
+        self.setWindowFlags(self.windowFlags() | Qt.WindowStaysOnTopHint)
+        self.setWindowTitle(self.tr("Preview"))
+        self.setWindowIcon(QIcon(":/previewImage.png"))
+
+
+class PreviewLinearScan(QDialog):
+    def __init__(self, method, inspection, scenario, transducer, parent=None):
+        super(PreviewLinearScan, self).__init__(parent)
+        self.parent = parent
+
+        self.mpl = MplCanvas(width=5, height=5, dpi=100)
+        self.mpl.ax.axis('off')
+
+        layout = QVBoxLayout()
+        layout.addWidget(self.mpl)
+
+        self.setLayout(layout)
+
+        self.setWindowFlags(self.windowFlags() | Qt.WindowStaysOnTopHint)
+        self.setWindowTitle(self.tr("Preview"))
+        self.setWindowIcon(QIcon(":/previewImage.png"))
+
+        self.method = method
+        self.inspection = inspection
+        self.scenario = scenario
+        self.transducer = transducer
+        QTimer.singleShot(300, self.Show)
+
+    def Show(self):
+        M, N = np.shape(self.scenario.I)
+        Pixel_mm = self.scenario.Pixel_mm
+
+        for offset in self.inspection.ScanVector:
+            self.transducer.CenterOffset = offset
+            XL, YL = self.method.view(M, N, Pixel_mm, self.method.Theta, self.transducer)
+            self.mpl.ax.imshow(self.scenario.I, vmin=0, vmax=255)
+            self.mpl.ax.hold(True)
+            self.mpl.ax.plot(YL, XL, 'ks')
+            self.mpl.ax.axis('off')
+            self.mpl.ax.hold(False)
+            self.mpl.draw()
+            QCoreApplication.processEvents()
+            time.sleep(0.25)
+
+
+class PreviewTomography(QDialog):
+    def __init__(self, inspection, scenario, transducer, parent=None):
+        super(PreviewTomography, self).__init__(parent)
+        self.parent = parent
+
+        self.mpl = MplCanvas(width=5, height=5, dpi=100)
+        self.mpl.ax.axis('off')
+
+        layout = QVBoxLayout()
+        layout.addWidget(self.mpl)
+
+        self.setLayout(layout)
+        self.setWindowFlags(self.windowFlags() | Qt.WindowStaysOnTopHint)
+        self.setWindowTitle(self.tr("Preview"))
+        self.setWindowIcon(QIcon(":/previewImage.png"))
+
+        self.inspection = inspection
+        self.scenario = scenario
+        self.transducer = transducer
+        QTimer.singleShot(300, self.Show)
+
+    def Show(self):
+        M, N = np.shape(self.scenario.I)
+        Pixel_mm = self.scenario.Pixel_mm
+        DiameterRing = self.inspection.DiameterRing
+        Theta = self.inspection.Theta
+
+        XL, YL = self.inspection.view(M, N, DiameterRing, Pixel_mm, Theta, self.transducer)
+        self.mpl.ax.imshow(self.scenario.I, vmin=0, vmax=255)
+        self.mpl.ax.hold(True)
+        self.mpl.ax.plot(YL, XL, 'ks')
+        self.mpl.ax.axis('off')
+        self.mpl.ax.hold(False)
+        self.mpl.draw()